Electrochemical Studies of Zinc Anode with Geopolymer Binder
Keywords:
Zinc anode, Geopolymer, Binder, Fly ashAbstract
The electrochemical properties of zinc anode with geopolymer binder have been investigated in this study. The geopolymer binder is composed of fly ash as substrate and sodium silicate (Na2SiO3) together with sodium hydroxide (NaOH) as activator materials. Cyclic voltammetry experiments of the anodes with different geopolymer to zinc ratios (geopolymer : zinc ratios = 32.5 : 6, 32.5 : 9 and 32.5 : 12) were carried out in 4 M NaOH. In the presence of geopolymer binder, the zinc anode did not show any electrochemical characteristics. SEM analysis was carried out to investigate the physical properties of the electrodes. The surface morphology of the anode with the geopolymer to zinc ratio of 32.5 : 12 showed a potential formation of zinc dendrite after 90 cycles.
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